Carbureter for oil-engines.



l100,000. EATBNTED 10H23, 19.07.

v y- 0.'ENRI00.'

0.0000001011 F00 011. ENGINES.

ArrLIouIox. FILED 0211.0. 190i.

` 2 sums-SHEET 1.

PATBNTBD JULY z3, 1907.

G. ENRIGO. GARBURETER PoR OIL ENGINES.

P PLIUATION FILED Arms. 1904.

/ 2 SHEETS-SHEET 2.

smh

W/ lVESSES.'

GIOVANNI ENRICO, OTURIN, ITALY.

CARBURETER FOR OIL-ENGINES.

To all 'whom it 'may concern:

Be it known that l, GIOVANNI Ennico, oi' Turin,

in the Kingdom of Italy, have invented new llnprovements in Carburetersfor Oil-Engines, of which the following is a full and exact description.

This invent-ion relates to a carburetor for oil engines,

l -such :xs-petrol engines, and has iorits object to provide a sinipleand eilicientcarbureter so constructed that in the explosive mixturethere is preserved a constant ratio between the amount of air und theamount of oil.

ln the accompanying drawings Figures l and 2 rep,-

re'sent vertical sections, at right angles to each other, oi acarbiueti-r constructed in accordance with this in vention.

The reservoir a is connected with the oil supply pipe b by meansoi avalve h operated by a float c acting on the arms f of levers bearing onthe top of the oa-t and fulcriinied at g so as tocausc the lowering andclosing of'tlie valve 1., tlie stein of which is provided with a groovodcoll-.tr with` which thc inner arms f of the le'- vers engagi; ltherefore regulated by the float e and kept at a constan-t 'pipe 5supplying air heated by the eihaust gases. The

cylindrical cli-nnibcr 'u communicates at its upper part with anenlargement oi the pipo m connected with a motor. ln the chamber 'vmoves a hollow cylindrical' piston valve m open at its lower part andprovided with a side opening (i corresponding to the aforesaid openingZ, but ol less height.

A t the Jupper part the piston vvalve n is provided with side openings tand with 'vertical passages t comniunicating with a' cylindricalextension l having a part 2 of larger diameter acting as a piston valvein a cap 3' arranged alove the carburetor and having in it open-- ings 4to the. atmospliero. The said part 2 counteracts 'the efiect of areduction or" pressure on the piston valve n? thereby balancing thesame. 'Without suoli balan ing the suction would have a tendency to movethe I valve at each piston stroke of. thev motor. v The piston valve 'nis connected by rods q to a cross piece r controlled by the governor.vThe said piston valve n carries a conical needle o extending downwardsfrom the top Aof the said piston valve n into the aperture p inthe topof the tube d. While the motor is running each Specification of LettersPatent Appleman med April 6, 1,904.. serial No. 201,913;

The level of tluoil in the reservoir a is Patented July 23,- 1907.

suction stroke causes a. reduction of pressure in the- -pipe in andenlargements" and thereby oiland air are' supplied through the aperturep and the opening l. 4

lf the action oi the governor tend to lower lthe speed by closing theadmission, the` cross-piecer is in the position shownin Fig. l, thepiston valve n and the en larged part 2 close the opening 4 andpartially close the opening Zwliile the aperture p is completely closedby the needle valve o. The opening 6 prevents the pening from beingcomplet-ely closed and prevents the'air supplied to the cli-amber obeing too much-throttled land cooled when the piston-valve n is raisedbut alittle distance above the bottom of the chainber'o. If thecross-piece r andthe pistou valve 'n thereby gradually opening both theair inlet l and aperture p to a greater governor tend to increase theadmission, it raises the extent, they being-completely opened when thepis-i` ton valve n reaches the upper end ofthe stroke as shown in Fig.2. In this position the enlarged part 2 uncovers the openings 4 and thecap 3 and additional air issnp-V plied.

By properly proportioning the needlevalve' o and the openings l, 6 and 4whatever the position ofthe. piston valve. u may be the ratio 'of thefree area of the aperture p and vuncovered portions of the air inlets land 4 reina/ins constant and consequently the ratio of the quantities ofair and oil forming the explosivemixture remains constant. l i

In order to insure good running of themotor it is advisable to soregulate the iloat e that'the level of the oil is a little below theaperture p, 4

Having nowparticularly described and ascertained the nature oi my saidinventionA and in what manner the sameis' to he performed, I declarethat what I.

1. A earbureter for o'l motors havinga casing having admission anddischarge passagesL andfa hollow piston its interior in communicationwith such admission passage valve arranged between 'such passages, saidvalve havlnit. I l

and having :in opening in its wall coperatlngwith nuca A -mlxture abovesuch inlets, and a second air lnlet'abva* said outlet, and a pis-tonvalve controlling auch .air inlet! and outlet. l A carbureter`haviugcil,casing provided with au. air

inlet: and suoli inlet at lti lower part, an'outlet'tor th-.f

'nixture above such inlets, nd a second air inle't'above said outlet,und n piston valve controlling such al1' inlets and outlet, said valvehaving va. passage 'through it to provide equal pressures on both itssides. y

4. A arbureter having a casing provided with an air inlet and an oliinlet at its'lowerlpalzt, un outlet for the and outletg'suid vulvehaving n paszlge through it to

